Indian Journal of Science and Technology

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Electrocardiography (ECG) deals with recording of the electrical activity of heart muscles. Usual method of ECG recording is done using 12-Lead system. The paper deals with a new method of recording the electrical activity of heart from the neck region (carotid artery). The waveform obtained is known as Neck cardiogram (NCG). It uses a simple method of signal acquisition, using three surface electrodes and an amplifier. The work aims to prove the significance of NCG in diagnosis of certain diseases that may not be prominent in normal ECG. The acquired ECG and NCG of the patient is compared using Matlab software and LabVIEW environment. The analysis of the waveforms is done using Daubechies wavelet transform and Higuchi fractal dimension. The analysis was done on large group of subjects including thyroid patients, cardiac patients and healthy subjects. The results obtained suggested NCG can be used as a tool to diagnose certain abnormalities. NCG can be used to record heart’s electrical activity for people with no upper limbs. This method of single lead system provides easier way of recording heart’s activity compared to the chest electrodes used in 12-lead system.

Keywords

Daubechies Wavelet Transform, Higuchi’s Fractal Dimension, NCG, 12-lead system
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